I can also confirm the bug in Lucid. I can connect (XP - Ubuntu 10.04) via an unencrypted or nearly unencrypted (WEP) Ad-Hoc connection.
I noticed how the following fact, which might hint to the source of the problem: When I switch to WPA, the Ad-Hoc network an XP machine is listed as encrypted, but not as an WPA encrypted network (my home network is WPA2 and listed as such). XP asks for a password, but expects an WEP key (for the WPA network). A network scan from another Ubuntu machine showed: my home network with WPA2: Cell 01 - Address: 00:26:4D:1A:7F:C7 ESSID:"Heimnetz" Mode:Master Channel:1 Frequency:2.412 GHz (Channel 1) Quality=49/100 Signal level=-66 dBm Encryption key:on IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK Preauthentication Supported Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s 18 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 12 Mb/s 24 Mb/s; 48 Mb/s Extra:tsf=000002ecfd456932 the Ad-Hoc network (configured as WPA): Cell 02 - Address: 3A:69:14:44:F2:1F ESSID:"tralala" Mode:Ad-Hoc Channel:1 Frequency:2.412 GHz (Channel 1) Quality=50/100 Signal level=-56 dBm Encryption key:on Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s 48 Mb/s; 54 Mb/s Extra:tsf=0000000010656387 encrypted, but not marked as WPA. I tried to configure it via the command line, but I'm missing the iwconfig/ifconfig commands for the wireless WPA. I don't want to put them into /etc/network/interfaces to avoid conflicts with my normal setup. -- incorrect encryption detected when logging on to WPA ad-hoc wireless network https://bugs.launchpad.net/bugs/322902 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs